摘要
秦岭地区沉积岩包括扬子地台北缘志留纪裂陷沉积到晚古生代被动大陆边缘断陷—拗陷盆地沉积和二叠纪裂陷沉积。现有勘查资料表明秦岭地区沉积岩容矿金矿大多集中在泥盆系和三叠系，少量分布在志留系，石炭系和二叠系。地质地球化学研究表明该区沉积岩容矿金矿类型有细碎屑岩容矿变形变质动热改造型、碎屑岩不纯碳酸盐容矿的韧性剪切带型、钠长角砾岩钠长板岩容矿的热水喷流型、碎屑岩碳酸岩容矿的浅成低温热液（ 热泉） 型和含炭泥质岩容矿的推覆构造型５ 种。该区金矿控矿条件为盆地边缘隆起带控矿、热隆起周边剥离断层系统控矿。
The sedimentary rocks of Silurian, Carboniferous, Permian, Devonian and Triassic are distributed in Qinling area; Devonian and Triassic are the main ore-hosted formation, secondly Silurian, Carboniferous and Permian formation.The gold mineralization is divided into five types: deformation-metamorphic and thermodynamic gold deposit hosted in fine clastic rocks, ductile shear zone - controlled gold deposit hosted in clastic rocks with intercalated limestone, thermal exhalation gold deposit hosted in albite breccia, epithermal gold deposit hosted in clastic-carbonate formation and nappe-controlled gold deposit hosted incarbon-bearing argillaceous rocks. The ore-controlling factors are summarized as uplift of basin margin, denudational fault at margin of thermal uplift,nappe of interface of different strata and multiphase deep-seated fault.
出处
《地质与勘探》
CAS
CSCD
北大核心
1999年第5期9-12,共4页
Geology and Exploration
关键词
金矿床
类型
控矿条件
找矿方向
沉积岩
容矿
sedimentary-hosted gold deposit, ore-controlling factors, Qinling area
